I guess the pic i posted was a little too big in fillsize for people with a slow connection. Sorry bout that. Here's a lower quality version (damn i hate quality loss )
Anyways, i haven't draw the hands yet, and i miss many details. My main problem is: what to do next? I did the dhabih tutorial wich was a GREAT help (tnx dhabih), but i really need some crits and hints from people more experencied than me.

Btw: my plan was to draw the hands later (not so good at hands) smoking marihuana. Logicaly, his eyes will be red and his pupils wide and stuff, but like i said... (i am repeating myself)

Pretty good idea... but one thing you must rememebr is if the wall is slanted / he needs to be sitting at a slant as well. Second of all, his pockets should be way higher up into the pants. Anyway, it seems like you did the cheap trick as you rprobably have no idea how to draw hands. So, just spend some time drawing hands as well. One thing that's a bit odd s his eyes are really white... while the surrounding area is dark. Anyway, great picture so far, but you may want to try adding a bit more folds in his clothes,(pants n sleeves) good luck!

Tnx for the advise
About the hands, it wasn't a trick for not to draw them but i wanted to wait cause i was not sure what to do with them (fist / smoking / etc ), but you are definitly right that i should practice more on hands cause it really takes a lot of time for me to get them right im my drawings.
Again, tnx for all the critics.